Mechanism for feeding folded blanks.



Patented Oct. 25, 1910.

P. MRKSGH.

COMBINED HINGE AND DOOR CHECK..

APPLICATION FILED NOV. 9, 190B.

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awww/4% UNITED sTATEsJl PATENT OFFICE.

PAUL` MRKSCH, 0F VOHWINKEL, GERMANY, ASSIGNOR T0 THE `ZFIWM 0F W. & G.

VOGEL, OF ELBERFELD,GEBMANY. l

COMBINED 'HINGE AND DOOR-CHECK.

Specicat-ion of Letters Patent.

Patented Oct. 25, 1910.l

Application tiled November 9, 1908. SeriaI No. 461,808.

To all whom it may cofncmn:

Be it known that L'PAUL MRKSCH, a

subject of the German Emperor, residing at Vohwinkel, Germany, have invented new and useful Improvements in Combined Hinges and Door-Checks. of which' the fol! lowing is a specification.

This invention relates to a combined hinge and door-check specially designed to be used with doors which open in both directions, the device being constructed so that the door is continu'oisly supported by one of the checking-cylinders.

In the accompanying drawings the iinproved combined hinge and door-check is shown by way of example.

Figure 1 is a ground plan of the device. Fig. 2` is a rear view of the opened door; Fig. 3 is a front view of the door post., the door being in open position. 1Fig. 4l is a vertical section representing the checkin-.g cylinder on a larger scale.

As shown in Fig. l, here. are two checking cylinders a, a fixed to the door-post- :r so that one is at the right.- hand side and the other at the left hand side of the door post. To the back of the door-leaf y there are fixed two depending arms p, p which form part of a plate r secured to the rear face of the door, said depending arms engaging respectively with a. hollow pintle d of the corresponding checking cylinder c or a', when the door is closed.

The checking cylinders perform the double function of the fixed members ofl a double act-ing hinge and of liquid chambers: they are constructed as follows: in t-he upper end of the checking cylinders a or a',4

he upper end of the hollow pintle d isl closed and anged so that its flange rests upon the upper 'edge of the cylinder a. A groove 0or o', is arranged in the upper flanged par-tof the hollow pintle d which serves for. the reception o f' the depending arm p or p.f.The hollow pintle d has a central boring in 'its lower part which is threaded lat high 4pitch and receives the correspondingly threaded rod c of .piston b.

i Said piston b is guided with a feather in a vertical groove ,7c of the inner surface of the cylinder wall, so ythat itscannot rotate.' The piston b has a non-return valved opening m for the passage of the .checking liquid which iills the cylinder above the piston A. channel g1, arranged in the wall of the cylinder serves for filling the checkingliquid into the cylinder; said channel terr minates at its lower end below the ,piston b and it has a branch channel g which terminates in the boring of the cylinder above said piston. The upper end of the channel g is closed by means of a pin z, whose upper7 threaded end' z' is Screwed into the threaded enlarged upper end of said channel. The end of pin h reaches down close to the branch channel y" so that `the orifice of thisbranchchannel can be more or less obstruct-ed by said pin. The lower free end .of the depending arms 79, 7)' is flattened.

The device operates as follows z-The cylinder between the upper surface of the checking liquid is filled into the cylinder a through the channel g after the pin h has been removed, so that it fills the part of the piston and the lower surface of hollow piniS ready for operation. Normally both de pending arms p, p' engage with the corre# spending grooves o, o of the hollows (l of the checking cylinders a, a. If now the dooris opened the depending arm p or pf which is situated in the direction in which the door is being opened remains in engagement with its hollow pintle, the other amr sliding out of the groove of its hollow pint-le. The depending arm which remains in vengagement with the groove of the corresponding hollow pintle causes said hollow pintle to revolve whereby the piston b of the corresponding cylinder, mounts rapidly owing to the. high pitch of the thread. The checking liquid flows through the non return valve m from the upper to the .lower side of the piston. The door is rotatably supported on said hollow pintles of the checking cylinders which serve as a double acting hinge. When the door is being closed automatically by any of the numerous well known devices for the automaticalclosing of doors, the liquid which has collected under the piston. checks the movement of the door being slowly'for'ced by the descending piston through the channel g and branch g n l n :with a port comnmnlcating with sind chanback into the upper part of the cylinder.

nel,.means including a screw valves for closing said 'Vertical channel, a hollow pintle having high pitched screw difende .rotatably mounted in each of sil-id cylinders and having also a, groove in ite head to receive the corresponding depending vTins of said fixed plate, menusincluding n elan'i'ping ring, to prevent vertical. movement of sind pint-le,

n p'istonvseated in the respective cylinders mid having a threaded piston rod adapted to engage the internal threads on the pintle, whereby it may be reciproca-ted by the rotation of the pintle, said piston being po vided with a nwfretni'n valved opening und means to prevent the rotation of the piston in the cyllndex'. l

In witness whereof .Il have heieuhto Set my hnd in the presei'ice of two witnesses. PAUL MR-KSCH. IL. 15.] Viitnesses OTTO KNIG, WALTER G'LAGHANY. 

